/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

Class
	Foam::pointPatchMapper

Description
	Mapping class for a pointPatchField.

SourceFiles
	pointPatchMapper.C

\*---------------------------------------------------------------------------*/

#ifndef pointPatchMapper_H
#define pointPatchMapper_H

#include "pointMapper.H"
#include "PointPatchFieldMapper.H"
#include "pointPatch.H"
#include "primitiveFields.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// Forward declaration of classes
class pointPatch;
class mapPolyMesh;


class pointPatchMapper
:
	public PointPatchFieldMapper
{
	// Private data

		//- Reference to patch
		const pointPatch& patch_;

		//- Reference to point mapper for internal field
		const morphFieldMapper& pointMapper_;

		//- Reference to mapping data
		const mapPolyMesh& mpm_;

		//- Size before mapping
		const label sizeBeforeMapping_;


	// Demand-driven private data

		//- Direct addressing (only one form of addressing is used)
		mutable labelList* directAddrPtr_;

		//- Interpolated addressing (only one form of addressing is used)
		mutable labelListList* interpolationAddrPtr_;

		//- Interpolation weights
		mutable scalarListList* weightsPtr_;


	// Private Member Functions

		//- Disallow default bitwise copy construct
		pointPatchMapper
		(
			const pointPatchMapper&
		);

		//- Disallow default bitwise assignment
		void operator=(const pointPatchMapper&);


		//- Calculate addressing for mapping with inserted cells
		void calcAddressing() const;

		//- Clear out local storage
		void clearOut();


public:

	// Static data members

	// Constructors

		//- Construct from mappers
		pointPatchMapper
		(
			const pointPatch& patch,
			const pointMapper& pointMap,
			const mapPolyMesh& mpm
		);


	// Destructor

		virtual ~pointPatchMapper();


	// Member Functions

		//- Return size
		virtual label size() const
		{
			return patch_.size();
		}

		//- Return size of field before mapping
		virtual label sizeBeforeMapping() const
		{
			return sizeBeforeMapping_;
		}

		//- Is the mapping direct
		virtual bool direct() const
		{
			return pointMapper_.direct();
		}

		//- Return direct addressing
		virtual const unallocLabelList& directAddressing() const;

		//- Return interpolated addressing
		virtual const labelListList& addressing() const;

		//- Return interpolaion weights
		virtual const scalarListList& weights() const;

};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //
